CVE-2023-2808
Medium
Description
Mattermost fails to normalize UTF confusable characters when determining if a preview should be generated for a hyperlink, allowing an attacker to trigger link preview on a disallowed domain using a specially crafted link.
SeverityMedium
CVSS4.3
Exploit probability—
Product
Mattermost
PublishedMay 29, 2023
First seenMay 29, 2023
Weakness typeCWE-20Improper input validation
How to fix
Update
- mattermost mattermost7.1.9, 7.8.4, 7.9.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mattermost mattermost | 5.34.0 ≤ v < 7.1.9, 7.2.0 ≤ v < 7.8.4, 7.9.0 ≤ v < 7.9.3 | 7.1.9, 7.8.4, 7.9.3 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.